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Vanderver's Patent Arithmetical

Currency:USD Category:Antiques / Science & Medicine (Pre-1930) Start Price:10.00 USD Estimated At:700.00 - 900.00 USD
Vanderver's Patent Arithmetical
Extremely rare example of "VANDERVER'S PATENT ARITHMETICAL IMPROVED BY J.B. MORRILL" Paper-covered cylinder. Patents: July 14, 1846 and January, 1856. 4.75"